The 7MB/E-237/U34-S10W from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 218.1 to 255.9 MHz, Bandwidth 37.8 MHz (1dB), Center Frequency 237 MHz, Upper Rejection 40 dB, Lower Rejection 40 dB. Tags: Lumped Component Filter. More details for 7MB/E-237/U34-S10W can be seen below.